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Proof step 3 from proof not-journal-or-index (previous step)

⊦ pstate.index? ↔ pstate ≠ unbuffered ∧ pstate ≠ readonly, pstate.journal?

User applied rule constructor cut

And closed the goal!

Rule argument

var: pstate

Additional information

Used simplifier rules: gen: ⊦ ;%test-11: ⊦ ¬ unbuffered.index?;%test-04: ⊦ ¬ readonly.index?;%disj-03: ⊦ unbuffered ≠ readonly;%test-03: ⊦ ¬ journal(m).index?;%disj-02: ⊦ unbuffered ≠ journal(m);%disj-06: ⊦ readonly ≠ journal(m);%test-09: ⊦ journal(m).journal?;%test-01: ⊦ index(m).index?;%disj-01: ⊦ unbuffered ≠ index(m);%disj-05: ⊦ readonly ≠ index(m);